A phosphine-free Pd catalyst for the selective double carbonylation of aryl iodides
作者:Verónica de la Fuente、Cyril Godard、Ennio Zangrando、Carmen Claver、Sergio Castillón
DOI:10.1039/c2cc17124d
日期:——
The first phosphine-free Pd-catalysed double carbonylation of aryl iodides is reported as a general and practical method, giving excellent conversions and selectivities for a wide range of aryl iodides and amine nucleophiles under atmospheric CO pressure.
An environmentally friendly directoxidativeamidation between methylarenes and free amines was developed.
开发了甲基芳烃和游离胺之间的环保型直接氧化酰胺化方法。
Highly Selective Palladium-Catalysed Aminocarbonylation of Aryl Iodides using a Bulky Diphosphine Ligand
作者:Verónica de la Fuente、Cyril Godard、Carmen Claver、Sergio Castillón
DOI:10.1002/adsc.201200114
日期:2012.7.9
the synthesis of amides via palladium‐catalysed aminocarbonylation of aryliodides is reported using the bulky cis‐1,2‐bis[(di‐tert‐butylphosphino)methyl]cyclohexane ligand under atmospheric pressure of carbon monoxide. Excellent conversions (up to 99%) and chemoselectivities (up to 99%) were obtained for a range of aryliodides and amine nucleophiles. The effect of the substituents on the substrate
Ionic Liquids for Separation of Olefin-Paraffin Mixtures
申请人:Dai Sheng
公开号:US20110015461A1
公开(公告)日:2011-01-20
The invention is directed to an ionic liquid comprising (i) a cationic portion containing a complex of a silver (I) ion and one or more neutral ligands selected from organoamides, organoamines, olefins, and organonitriles, and (ii) an anionic portion having the chemical formula
wherein m and n are independently 0 or an integer of 1 or above, and p is 0 or 1, provided that when p is 0, the group —N—SO
2
—(CF
2
)
n
CF
3
subtended by p is replaced with an oxide atom connected to the shown sulfur atom. The invention is also directed to a method for separating an olefin from an olefin-paraffin mixture by passing the mixture through a layer of the ionic liquid described above.
QUINUCLIDINE DERIVATIVES BINDING TO MUCARINIC M3 RECEPTORS
申请人:Collingwood Stephen Paul
公开号:US20100041887A1
公开(公告)日:2010-02-18
Compounds of formula I
in salt or zwitterionic form wherein, wherein R
1
, R
2
, R
3
, and R
4
have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.